2. Volcano

Helen looks at volcanoes. With shocking eyewitness footage of eruptions, and new thermal imagery and ultra-high speed photography, we can now capture on camera the complex proce ...

15-05-2024

BBC 4

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6. Iceberg

10-07-2023

BBC 4

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4. Aurora

24-10-2022

BBC 4

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3. Lightning

24-10-2022

BBC 4

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1. Avalanche

Dr Helen Czerski looks at the anatomy of an avalanche. From shocking eyewitness footage from within an avalanche, to detailed CT scans showing the microscopic changes that cause ...

23-10-2022

BBC 4

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5. Tornado

19-10-2022

BBC 4

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